Re-Installation / Indoor Unit Needs To Be Repaired; Re-Installation While The Outdoor Unit Needs To Be Repaired - Bosch Climate 5000 Series Service Manual

5.6 Re-Installation / Indoor Unit Needs to be Repaired

Collecting the refrigerant into the outdoor unit (passive recovery)
(Liquid Side)
(Indoor Unit)
(Gas Side)
Close
Close
Figure 14
Procedure
1. Confi rm that the 2- and 3-way valves are opened.
2. Connect the charge hose with the push pin of Handle Lo to the 3-way valve's
gas service port.
3. Open the Handle Lo manifold valve to purge air from the charge hose for 5
seconds and then close it quickly.
4. Close the 2-way valve.
5. Operate the air conditioner in cooling mode. Cease operations when the
gauge reaches 0.1 MPa (14.5 Psi).
6. Close the 3-way valve so that the gauge rests between 0.3 MPa (43.5 Psi)
and 0.5 MPa (72.5 Psi).
7. Disconnect the charge set and mount the caps of service port and 2- and
3-way valves.
8. Use a torque wrench to tighten the caps to a torque of 18 N.m.
9. Check for gas leakage.
Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
(Outdoor Unit)
Two-way valve
Three-way valve
Open

5.7 Re-Installation While the Outdoor Unit Needs to be Repaired

Evacuation for the whole system
(Liquid Side)
(Indoor Unit)
(Gas Side)
Open
Vacuum Pump
Figure 15
Procedure:
1. Confi rm that the 2- and 3-way valves are opened.
2. Connect the vacuum pump to the 3-way valve's service port.
3. Evacuate the system for approximately one hour. Confi rm that the compound
meter indicates -0.1 MPa (14.5Psi).
4. Close the valve (Low side) on the charge set and turn off the vacuum pump.
5. Wait for 5 minutes then check whether the gauge needle moves after turning
off the vacuum pump. If the gauge needle moves backward, check whether
there is gas leakage.
6. Disconnect the charge hose from the vacuum pump.
7. Mount the caps of service port and 2- and 3-way valves.
8. Use a torque wrench to tighten the caps to a torque of 18 N.m.
Service Manual
(Outdoor Unit)
Two-way valve
Open
Three-way valve
Open
Close
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